The UN Security Council voted Friday to renew the mandate of a peacekeeping force in the Democratic Republic of the Congo — the largest and most expensive of the UN’s 16 missions — but slashed the number of UN staff and troops protecting civilians in the troubled African nation.

The move, which garnered unanimous approval from the Security Council’s 15 members, comes as the UN focuses on trimming the fat from its budgets, partly in response to greater scrutiny from the Trump administration.

The UN Organization Stabilization Mission, or MONUSCO in UN parlance, is run to the tune of $1.2 billion and now consists of a maximum of 19,815 military personnel, 760 military observers and staff officers, 391 police personnel, and 1,050 personnel of formed police units.

The new mandate ensures the mission will be in place through March 2018 but drops the cap down to 16,215 military personnel, 660 military observers and staff officers, 391 police personnel, and 1,050 personnel of formed police units.

The Trump administration is considering cutting as much as $1 billion from its contributions to UN peacekeeping even as it works inside the organization to make it a leaner operation.

“It’s not every day that the United Nations saves millions of dollars and improves accountability, while at the same time doing its essential work of protecting civilians,” said Nikki Haley, the U.S. ambassador to the UN, hailing the decision as a turning point even though the mission has undergone trims before. “With the support of the Security Council, we are changing lives and the culture of the UN for the better. That’s what we did today by reforming the peacekeeping mission in the Democratic Republic of the Congo and what we will do more of in the days ahead as we review each and every UN peacekeeping operation.”

The reduction comes as the UN’s outgoing peacekeeping chief, Herve Ladsous, announced on March 24 that it would shut down three other missions — in Haiti, Ivory Coast and Liberia — within a year. Ivory Coast will be closed in June, Haiti by October and Liberia in March 2018.

Currently, the United States contributes 22 percent of the UN’s operating budget and nearly 29 percent of the UN’s nearly $8 billion peacekeeping budget — but President Donald Trump has vowed to cut that figure substantially.

Although the vote to reduce the mission comes as no surprise — the force was reduced by 2,000 troops in 2015 and recommended for another cut of 1,700 months later — some diplomats had warned that too large a slice would be premature because Congo is not a stable or peaceful country. It has been racked by decades of war between the government and opposition and independent actors warring for diamonds, gold, coltan — a key component of electronics like mobile phones — and other minerals.

Egypt’s UN ambassador, Amr Abdellatif Aboulatta, and Russia’s UN ambassador, Petr Iliichev, voted for the resolution even as they cautioned that the decision to reduce the mission strength should not be made based solely on savings.

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This week, the bodies of an American and a Swedish investigator for the UN and their Congolese colleague were found during a spike in violence between government troops and local militias.

Even the Security Council resolution authorizing the cutback noted that the Congo was the site of “persistent high levels of violence and violations and abuses of human rights and violations of international humanitarian law, condemning in particular those involving targeted attacks against civilians, widespread sexual and gender-based violence, recruitment and use of children by armed groups and militias, the forced displacement of significant numbers of civilians, extrajudicial executions and arbitrary arrests.”

The top prosecutor at the International Criminal Court, a UN body, said Friday before the vote that she was alarmed at an uptick in violence.

“I am deeply concerned by the numerous reports over the past several months of serious acts of violence in the Democratic Republic of the Congo, particularly in the Kasaï provinces,” wrote Fatou Bensouda in a statement that hinted at the possibility that the court could prosecute perpetrators of war crimes. “There have been reports of violent clashes between local militia and Congolese forces, a large number of killings of both civilians and non-civilians, kidnappings and summary executions, including of United Nations experts on mission and their support staff. Such acts could constitute crimes within the jurisdiction of the International Criminal Court.”

The ICC has been investigating war crimes and crimes against humanity in Congo since June 2004.

On the political front, Congo is scheduled to hold an election to replace longtime President Joseph Kabila, who has been in power since his father, Laurent Kabila, was assassinated in January 2001. Kabila was due to step down in December after two terms in office but elections that should have been scheduled were postponed because the government failed to arrange them in time.